Shedding grip – Hobbywing FOC and Citadel Mamba X?
Hobbywing AXE R2-FOC or Citadel Creations Mamba X – you may marvel which one to spend your cash on? So do I. Or, moderately, so did I till I attempted them each. Ever since I put a Citadel Mamba X in my Axial Yeti in 2016, I’ve been keen on the system, to the purpose the place I now personal 4 of them. Nevertheless, final 12 months when my SCX10 acquired to heavy for the Mamba Micro X it was working, I made a decision that it was due time for some trustworthy comparisons.
Very long time no write by the way in which, life’s gotten in between. It occurs.
Anyway, there’s loads to be mentioned for sticking with one thing that works – in my case Citadel – however it may be very enlightening to attempt one thing new. As fond as I’m of the Citadel ESC’s auxiliary channel, I’ve been intrigued by the FOC system ever since I examine it. I do know that it’s been round for a number of years or so now, however humor me.
In keeping with Hobbywing with Area-Oriented Management (FOC) “the motor and ESC are in a position to match the RPM of the motor to your throttle place underneath all driving situations.” Sounds cool, however what does it really imply? It signifies that present terminology has gotten outdated.
What we name digital velocity controls should be referred to as digital throttle controls as an alternative (ETC), whereas the FOC system must be referred to as an digital velocity management. See, with a Mamba (or any conventional) ESC, at any given throttle place of your transmitter the ESC delivers a certain quantity of energy to the motor. Relying on circumstances, that quantity of energy will make the automotive go gradual (uphill) or quick (downhill). Identical to while you’re strolling and speaking on the identical time. Come uphill, your velocity will go down should you nonetheless wish to have sufficient breath left for speaking, whereas downhill you’ll be capable of stroll sooner on the identical quantity of exertion. Informed ya, throttle management, not velocity management.
A FOC system alternatively turns issues round. At any given throttle place the ESC will make the motor flip at a selected velocity, altering the quantity of energy delivered relying on circumstances. Much less energy because the automotive begins going downhill, and vice versa, on a regular basis preserving the velocity secure. Cool, proper? Sort of as should you had been strolling on a treadmill and your mate modified the incline up and down, with out altering the velocity. So as to not fall off or stumble, you’d need to both work more durable or go straightforward relying on the wims of your mate.
That’s it for concept, what about actual life? Properly, at the moment I’ll simply say that it’s a moderately totally different driving expertise. Take a look on the image above, that’s a 9 pound crawler. With the intention to go down that hill, I didn’t let go of the brakes as per a conventional ESC. Moderately, I pulled the set off and crept down an inch at a time. Now there’s loads of opinion available on this fashion of driving, however nobody can argue that the Hobbywing FOC actually delivers a formidable quantity of management.
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